diff options
| -rw-r--r-- | drivers/pci/pci-uclass.c | 76 | ||||
| -rw-r--r-- | include/pci.h | 18 |
2 files changed, 94 insertions, 0 deletions
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c index 6262f352c9..b79927e453 100644 --- a/drivers/pci/pci-uclass.c +++ b/drivers/pci/pci-uclass.c @@ -210,6 +210,17 @@ int pci_write_config(pci_dev_t bdf, int offset, unsigned long value, return pci_bus_write_config(bus, bdf, offset, value, size); } +int dm_pci_write_config(struct udevice *dev, int offset, unsigned long value, + enum pci_size_t size) +{ + struct udevice *bus; + + for (bus = dev; device_get_uclass_id(bus->parent) == UCLASS_PCI;) + bus = bus->parent; + return pci_bus_write_config(bus, pci_get_bdf(dev), offset, value, size); +} + + int pci_write_config32(pci_dev_t bdf, int offset, u32 value) { return pci_write_config(bdf, offset, value, PCI_SIZE_32); @@ -225,6 +236,21 @@ int pci_write_config8(pci_dev_t bdf, int offset, u8 value) return pci_write_config(bdf, offset, value, PCI_SIZE_8); } +int dm_pci_write_config8(struct udevice *dev, int offset, u8 value) +{ + return dm_pci_write_config(dev, offset, value, PCI_SIZE_8); +} + +int dm_pci_write_config16(struct udevice *dev, int offset, u16 value) +{ + return dm_pci_write_config(dev, offset, value, PCI_SIZE_16); +} + +int dm_pci_write_config32(struct udevice *dev, int offset, u32 value) +{ + return dm_pci_write_config(dev, offset, value, PCI_SIZE_32); +} + int pci_bus_read_config(struct udevice *bus, pci_dev_t bdf, int offset, unsigned long *valuep, enum pci_size_t size) { @@ -249,6 +275,17 @@ int pci_read_config(pci_dev_t bdf, int offset, unsigned long *valuep, return pci_bus_read_config(bus, bdf, offset, valuep, size); } +int dm_pci_read_config(struct udevice *dev, int offset, unsigned long *valuep, + enum pci_size_t size) +{ + struct udevice *bus; + + for (bus = dev; device_get_uclass_id(bus->parent) == UCLASS_PCI;) + bus = bus->parent; + return pci_bus_read_config(bus, pci_get_bdf(dev), offset, valuep, + size); +} + int pci_read_config32(pci_dev_t bdf, int offset, u32 *valuep) { unsigned long value; @@ -288,6 +325,45 @@ int pci_read_config8(pci_dev_t bdf, int offset, u8 *valuep) return 0; } +int dm_pci_read_config8(struct udevice *dev, int offset, u8 *valuep) +{ + unsigned long value; + int ret; + + ret = dm_pci_read_config(dev, offset, &value, PCI_SIZE_8); + if (ret) + return ret; + *valuep = value; + + return 0; +} + +int dm_pci_read_config16(struct udevice *dev, int offset, u16 *valuep) +{ + unsigned long value; + int ret; + + ret = dm_pci_read_config(dev, offset, &value, PCI_SIZE_16); + if (ret) + return ret; + *valuep = value; + + return 0; +} + +int dm_pci_read_config32(struct udevice *dev, int offset, u32 *valuep) +{ + unsigned long value; + int ret; + + ret = dm_pci_read_config(dev, offset, &value, PCI_SIZE_32); + if (ret) + return ret; + *valuep = value; + + return 0; +} + int pci_auto_config_devices(struct udevice *bus) { struct pci_controller *hose = bus->uclass_priv; diff --git a/include/pci.h b/include/pci.h index 628ede0957..d1e2765cac 100644 --- a/include/pci.h +++ b/include/pci.h @@ -988,6 +988,24 @@ int pci_bus_read_config(struct udevice *bus, pci_dev_t bdf, int offset, int pci_bus_write_config(struct udevice *bus, pci_dev_t bdf, int offset, unsigned long value, enum pci_size_t size); +/** + * Driver model PCI config access functions. Use these in preference to others + * when you have a valid device + */ +int dm_pci_read_config(struct udevice *dev, int offset, unsigned long *valuep, + enum pci_size_t size); + +int dm_pci_read_config8(struct udevice *dev, int offset, u8 *valuep); +int dm_pci_read_config16(struct udevice *dev, int offset, u16 *valuep); +int dm_pci_read_config32(struct udevice *dev, int offset, u32 *valuep); + +int dm_pci_write_config(struct udevice *dev, int offset, unsigned long value, + enum pci_size_t size); + +int dm_pci_write_config8(struct udevice *dev, int offset, u8 value); +int dm_pci_write_config16(struct udevice *dev, int offset, u16 value); +int dm_pci_write_config32(struct udevice *dev, int offset, u32 value); + /* * The following functions provide access to the above without needing the * size parameter. We are trying to encourage the use of the 8/16/32-style |